Dynamic information storage or retrieval – Dynamic mechanism subsystem – Access of multiple storage elements
Reexamination Certificate
2001-05-25
2004-06-15
Klimowicz, William (Department: 2652)
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Access of multiple storage elements
C369S030810, C369S030780, C369S030850
Reexamination Certificate
active
06751181
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a disc recording and/or reproducing device for receiving and recording/reproducing a plurality of discs.
BACKGROUND ART
There is a disc player by way of disc recording and/or reproducing device mounted on motor vehicles for recording and/or reproducing sound. The disc player is constructed to store a plurality of CDs (compact discs) in a magazine and change the whole CDs at a time together with the magazine. This leads to a device enlargement, so that the main body is received in a trunk, while only the part necessary for operation is arranged in a cabin. However, changing CDs is not possible during driving of the vehicle, and requires stop thereof to open the trunk, forming a bothersome affair.
On this account, vehicle-mounted disc players to be received in cabins are developed in recent years. Such vehicle-mounted disc player, which is required to enable storage of a plurality of CDs, is received in a predetermined in-dash space in the cabin. Accordingly, there remains an essential challenge of a reduction in size of the vehicle-mounted disc players.
The vehicle-mounted disc player includes a roughly rectangular-prism casing of a given dimension called 1 DIN size or the like, in which, for example, six trays for individually mounting six CDs thereon are placed one upon another to constitute a disc compartment. Six CDs can individually be loaded and ejected to successively select one of six CDs for reproduction.
A prior-art reference
1
of the vehicle-mounted disc player is constructed such that for selecting and reproducing one of six CDs, six trays for mounting CDs are arranged to be placed vertically one upon another, and a male screw having a greater pitch in the middle portion along the length is formed with a shaft arranged through the trays to obtain a screwed shaft. Rotation of the screwed shaft causes the trays to successively rise from the top. When stopping rotation of the screwed shaft with a selected tray mounting selected CD being located in the middle portion of the screwed shaft, spaces are defined above and below the selected tray. Then, a spindle motor and turntable and a pickup unit are inserted below selected CD to engage a claw protruding upwardly from the center of the turntable with a hole of CD through upward motion of the turntable, mounting CD on the turntable. After withdrawing the turntable, CD is rotated for reproduction.
A prior-art reference
2
is constructed such that after moving CD to be reproduced to a predetermined level position by moving a cartridge upwardly or downwardly, spaces are formed above and below CD to be reproduced by space forming means. A turntable and a chucking plate are introduced into the spaces to chuck CD to be reproduced on the turntable, and an optical pickup is moved from a standby position to a reproduction position.
However, the prior-art reference
1
presented the following problem:
Since the device is not configured to hold CD from both sides for rotation, coupling is not sufficient between the turntable and CD to deteriorate the vibration characteristics during reproduction. In some cases, CD can accidentally be detached from the turntable.
The prior-art reference
2
presented the following problems 1) and 2):
1) The cartridge is moved upwardly or downwardly with respect to the optical pickup fixed at the level position shown by H in
FIG. 38
, so that for moving the cartridge
201
as illustrated by the solid line from the state of reproducing CD
202
on the uppermost stage to the state of reproducing CD
203
on the lowermost stage of the cartridge
201
, the cartridge
201
should be raised to the position as illustrated by the two-dot chain line. As a result, a height T
1
of a cartridge receiving space is roughly twice as great as a height T
2
of the cartridge
201
, forming a bottleneck to a reduction in thickness of the disc player.
2) After movement of CD to be reproduced to a predetermined level position, the space forming means are moved toward the CD to form spaces above and below CD to be reproduced. Turntable and chucking plate are introduced into the spaces to chuck CD on the turntable, and the optical pickup is moved from the standby position to the reproduction startup position. Thus, changing CD requires a lot of time.
Additionally, for accommodation of a plurality of CDs, the device needs to hold parts of operation mechanisms for carrying out various operations such as CD loading, ejection, recording, reproduction, etc., leading to difficult reduction in size of the device in its entirety.
DISCLOSURE OF THE INVENTION
Therefore, the present invention aims to provide a disc recording and/or reproducing device that solves such problems.
For achieving such object, the disc recording and/or reproducing device is constructed such that it comprises: a plurality of disc mounting means for mounting discs thereon; a support means for placing said plurality of disc mounting means one upon another and movably supporting them in the placing direction; a disc driving means for driving a rotation supporting means for rotatably supporting a selected disc; a bias means for biasing said plurality of disc mounting means in one side of the placing direction; and a movable control means, provided with a separation control part for moving a selected disc mounting means for mounting the selected disc to another side against said bias means so as to form a first space for disposing said disc driving means on one side of said selected disc mounting means, and for forming said first space.
The disc recording and/or reproducing device is constructed such that, it comprises a position restricting means for restricting, when the disc mounting means exists on one side of said selected disc mounting means, movement of the one-side disc mounting means to another side, wherein the position of the one-side disc mounting means is restricted to form said first space between the selected disc mounting means and the one-side disc mounting means.
The disc recording and/or reproducing device such that, said position restricting means is formed with said control means.
The disc recording and/or reproducing device is constructed such that, said position restricting means comprises a face of said control means along said moving direction.
According to the disc recording and/or reproducing device, the first space is formed on one side of the selected disc mounting means with a selected disc mounted in the placed disc mounting means, into which the rotation supporting means is inserted to mount the selected disc, allowing sure mounting on the disc.
The disc recording and/or reproducing device is constructed such that, it comprises a disc holding means for holding said selected disc between the disc holding means and said rotation supporting means, wherein when the disc mounting means exists on another side of said selected disc mounting means, said control means forms a second space between said selected disc mounting means and said another-side disc mounting means to dispose said disc holding means.
According to such disc recording and/or reproducing device, it comprises a disc holding means for holding said selected disc between the disc holding means and said rotation supporting means, allowing reproduction of the disc in the holding state, resulting in no possible occurrence of disengagement of the disc during reproduction.
The disc recording and/or reproducing device is constructed such that, a pair of said control means is arranged so that movement thereof leads to formation of said first space on one side of the selected disc mounting means.
The disc recording and/or reproducing device is constructed such that, said pair of control means comprises said position restricting means.
According to the disc recording and/or reproducing device, a pair of said control means is arranged, obtaining stabilized support for the disc mounting means.
The disc recording and/or reproducing device is constructed such that, a pair of said separation control parts is arranged to move thereby said
Hama Toru
Ishibashi Takayuki
Taka Yoshiteru
Takizawa Kazuyuki
Watanabe Tomohiro
Klimowicz William
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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